[原创]Rohm BD9S400MUF-C超紧凑汽车DC/DC转换器解决方案

Rohm公司的BD9S400MUF-C是内置低ON电阻功率MOSFET的同步降压DC/DC转换器,提供电流高达4A. SLLMTM控制在轻负载条件提供了极好的效率特性,使得产品非常适合用于降低设备的待机功耗.由于采用高开关频率2.2MHz,可使用小型电感.器件是电流模式控制DC/DC转换器,具有高速瞬态响应.相位补偿也能很容易设定.器件还能和外接脉冲同步.器件具有AEC-Q100资质,可调整软起动功能,具有良好功率输出.器件具有输入欠压锁住保护,短路保护,输出超压保护,过流保护,热关断保护.输入电压2.7V-5.5V,输出电压设定从0.8V到VPVINx0.8V,典型关断电流为0μA,工作温度-40°C 到 +125°C.采用3.00mm x 3.00mm x 1.00mm VQFN16FV3030封装.主要用在汽车设备.本文介绍了BD9S400MUF-C主要特性和指标,框图和多种应用电路,多种参考电路及其所用的元件清单, 评估板REFRPT001-EVK-001和框图,电路图和所种应用材料清单与PCB设计图.

BD9S400MUF-C is a synchronous buck DC/DC Converter with built-in low On Resistance power MOSFETs. It is capable of providing current up to 4A.

The SLLMTM control provides excellent efficiency characteristics in light-load conditions which make the product ideal for reducing standby power consumption of equipment. Small inductor is applicable due to high switching frequency of 2.2MHz. It is a current mode control DC/DC Converter and features high-speed transient response. Phase compensation can also be set easily.

It can also be synchronized to external pulse.

BD9S400MUF-C主要特性:

n SLLMTM (Simple Light Load Mode) Control

n AEC-Q100 Qualified

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